/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.util;



import java.io.IOException;



/**

 * Utilities for {@link BackOff}.

 *

 * <p><b>Note</b>: This is copied from Google API client library to avoid its dependency.

 */

public final class BackOffUtils {



  /**

   * Runs the next iteration of the back-off policy, and returns whether to continue to retry the

   * operation.

   *

   * <p>If {@code true}, it will call {@link Sleeper#sleep(long)} with the specified number of

   * milliseconds from {@link BackOff#nextBackOffMillis()}.

   *

   * @param sleeper sleeper

   * @param backOff back-off policy

   * @return whether to continue to back off; in other words, whether {@link

   *     BackOff#nextBackOffMillis()} did not return {@link BackOff#STOP}

   * @throws InterruptedException if any thread has interrupted the current thread

   */

  public static boolean next(Sleeper sleeper, BackOff backOff)

      throws InterruptedException, IOException {

    long backOffTime = backOff.nextBackOffMillis();

    if (backOffTime == BackOff.STOP) {

      return false;

    }

    sleeper.sleep(backOffTime);

    return true;

  }



  private BackOffUtils() {}

}